Standard: GB /T 853 - 1988
Available sizes: (M18) to M8 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| (M18) | 39.62 | 10 | 187.7 | 39 | 70 | 3 |
| M10 | 20.52 | 7 | 50 | 20 | 40 | 3 |
| M12 | 24.52 | 7 | 44.61 | 24 | 40 | 3 |
| M16 | 30.52 | 8 | 76.78 | 30 |
Standard corrosion protection for indoor and mild outdoor environments.
Salt spray: 96–200 hours | RoHS compliant (trivalent chromium)
High-performance coating for automotive, marine, and harsh environments.
Salt spray: 720–1500 hours | Recommended for grade 8.8+
Heavy-duty protection for structural and outdoor applications.
Salt spray: 500–1000 hours | Thread tolerance adjustment required
Note for high-strength fasteners (Grade 10.9, 12.9): Electroplating processes require hydrogen embrittlement relief baking (minimum 4 hours at 200°C within 4 hours of plating). Contact our engineering team for grade-specific plating recommendations.
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
| 50 |
| 3 |
| M6 | 9.36 | 3.8 | 5.79 | 9 | 18 | 2 |
| M8 | 13.93 | 4.8 | 16.9 | 13.5 | 28 | 2 |
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